About Kmail/ Kontact

Hi Good Morning,
Has anyone been able to configure Kontact to sync contacts with mailo ? I have recently subscribed for their services but it seems Kontact is not able to sync the calendar (caldav.mailo.com) or contacts (carddav.mailo.com). Gmail syncs fine but I want to get rid of Gmail…
Please note that Kontact can see the resources and also allows me to add them. But thats that!
When I was earlier giving Gnome a spin - Evolution did not have any problems. I am not really interested to use Gnome as their basic applications are too much crippled. The only good native app is Evolution IMHO.